Once a month and it’s a different task each time for an hour or two? No one does that - a monthly or bi-monthly cleaning service is $200-$400 and they generally do the whole place in one fell swoop and they’re definitely not going to agree to cutting their pay since you don’t want your full house serviced after taking the time to prep, come out, and maybe say no to another job. I don’t know if you have freelanced before, but this is how you think when you engage in contract work. “Time is money” applies 10x compared to a salaried job. All of this is to say 3-4hrs is very typical. You seem to be coming up with the single thinnest definition of what constitutes hiring for housework and it just doesn’t reflect 99% of how these hires go.
Also, we are comparing to a robot that does all your chores any day. Once a month is not a fair comparison to begin with. This is carrots to oranges.
Let’s be super generous here. $100/day twice a week for a basic pass at your house. Dishes, laundry, some wipe downs, put things way, standard chores. $800/mo, $9600/yr. Plus payroll service/taxes/etc. Hell do $100 once a week, which you’d be lucky to get. This is a $5-6k a year investment for the bare minimum and you’re still doing 80% of the chores annually. If you’ve got kids this person is barely making a dent.
Hiring people is expensive. If it isn’t, you’re not treating them with basic dignity.